Taiking machine



Jan. 22 T924. 1,481,749

C; SCRABIC TALKING MACHINE Filed April 28. 1920 3 Sheets-Sheet 2 Jan. 22, 1924. 1,481,749

i C. SCRABIC TALKING MACHINE Filed April 2B 1920 3 SheetS-Sheet 3 mem/to@ .The invention consists morelv articularly;A

. the walls .of Vsaid structure being spaced. from the amplifier and united for..resonance therewith by means ofbridge strips, the;

Patented Jan. 22, 1924.

UNITED STATES PATENT OFFICE.

CARL SCRA'BIC, 0F URBANA, OHIO.

TALKING MACHINE.

Application illcd April 28, 1920. Serial Ifo. 377,219.

To all whom z 't may concern.'

Be it known ithat CARL Scnanio, a citizen of the United States, residing at Urbana, in the county of Champaign and State of Ohio, has invented certain new and useful Improvements in Talking Machines, of which the-following is :i specification.

This invention relates to sound reproducmachine record fby, eliminatingharsh and metallic 4discards and by developing` and bringing forthnot only.the fundamental -tones but ,alsothe line and delicate overtonesi or partielssf*-V in the larly.V a aptedjfor useingconjunction with formed from a resonant material .and of troducedy in order that the-same may be aduallyl expanded, developed and en anced in tone upon 'their delivery fromv the outlet end of the am lier.

' Another object of t e invention resides in combinin an improved sounding board structure in con}unction with the amplifier,

construction being such that the funda mental tones ma be developed within the.

amplifier, and te fine over-tones will be produced and brought out by the soundingtaken along the line 5--5 ofiFi board structure. 4

A further4 objectof the invention resides in. unitarilyy oonnectinlg the amplifier and .sounding board structure, .in order that the same may be de osited as a unit within the cabinet ofia ta ing' machine, the construction being such that the amplifier and soundfrom .the cabinet of a talking machine in order to obtain 'facility in-inanufacture and to permit the parts o the talking machine roviSion.-.of .an amplien .particu-y after to be fully described and -to have the talking machines,. ,said .famplifier being ,claims. p suchformas to ,constitute -a somewhat extended outwardly Haring tube, .inthe-'nar-4 row end of .which sounds are; initially -in.

falong the line 6 6 'of Fi may be constructed separately.

complis-hed without being extraneously in-f fluenced .b V4non-resonant surfaces.

A still urther object resides in providing the amplifier with a plurality of telescopic `hollow combs sodisposed as to be directly iii contact with sound waves 4assing through the am litier, said combs being spaced from the wa ls o f the amplier and are capable of resonanting synchronously with said walls by means of the provision of rigid bridge members, the presence of said combs in the amplilier results'in increasing the resonanting area ofthe amplifier as awhole and is therefore -capable of assisting in the develop- .ment'of sound vibrations.

V Vlith these and other objects in view, as willappearas the description proceeds, the

invention .further consists in the novel features' of construction, combinations of .elements and arrangement of parts, hereinscope thereof po'nted out in 'the vappened` the accompanyingdrawings, forming a altof this specification, and in which similar'cliaracters of. reference denote like and correspondingpartm. l

. Fifreyl 1s a vertical .longitudinal sectiona view taken through a talking machine constructed in accordance with the principles of the present invention.

l Figure 2 is n. transverse horizontal sec' tional view taken along the plane disclosed by the line -,2-2 of Figure 1.

Figure 3 is a front elevation of the out let end. ofthe amplifier.

' -Fi'gure 4 is .a detailed sideelevation of the amplifier disclosing more particularly the structural development. A

Figure 5 is, a horizontal1-sectional view re 4, and, Figure 6 is a detailed sectiona view taken Referring more partie arly to the details of the invention, the numeral 1 designates the talknomachine vcoin rising the present invention in its entirety. 's machine preferably consists of .an upright"cab1net 2 of anyT suitable and ornamental exterior conguration. In the form illustrated, the cabinet 2 isformed to embody vertically extending upright corner posts 3 which are united b r means of side and rear walls -'l, a bottom 5 and a top 6, all of which serve to enclosi-I the reproducing mechanism of the talkin"r machine.

lorizontalti' disposed within the cabinet a shelf 7, below which is located a record filing; case S and a motor chamber 9. This chamber is provided with any suitable type of motor 10,either spring or electrical, whose shaft ll protrudes upwardly through a bearing provided in the shelf 7 and is adapted to carry the usual turn table or otherrotatablc record support 12. The winding shaft l?, of themotor 10, if .thc inner is nf the spring type, .protrudes forwardly and is equipped with a telescopic handle tel. the latter. when idle, is normally disposed to lie within a recess 15 lprovided in the front wall 1G of the chamber 9. 'When in use. the handle 14 is moved outwardly to a position independent of the Wall 16, in order that said handle may be conveniently grasped to effect its rotation. This -construction ot the handle permits the latter-to d isappear, as it were, when not in use and by its position, the same will not forngan objec` tionable projection upon a talking machine when not in use. Further, thereco'rdea'se is closed by means of one or more hinged doors 1'( which serve to co\e r t theV interior of the case S and to thereby enhancethe general appearance of 'the cabinit consti'uc tion. The turn table 12 issitutd alove the shelf and is located withina tone arm compartment 13 which is deliiied by of upright walls 419 and a horizontaltp 20. This cabinet is closed byine'aris of a hinge door construction 21. Located vfithin the compartment 18 i s the usualsvirirging lone varm 22, which is pivotally carried .1n a. suitable bearing 23 provided in tlie shelf 7. The outer end of the tone ann is equipped with the nslial sound box 24 v'hich is movable into engagement with the o ov'es of a record capable of being carri" npon the turn table l2 i n the ordinarvfnanner.

From this description, it will be obvious that the machine 1 may be operat'ed in a very simple and convenient manner. The location of thc compartment 18 is such that its interior parts may be readily handled .by one who is occupying a seated position.4 In the average ta'llcirtg.;r machine 'o f the type under discussion, it is necessary for'the operator to hc rontinuously stoopiig over or bending in order to r'each various incohan'isnis and parts. However, by the arrangement of parts in the present invention= it will be obvious that the record may be remoredfrom the case 8, deposited upon the turn 4table 12, the motor may zbeusuitably wound and the sound box and tone arm adjusted witliontrequiring the operator to more from :i seated position, This accessibility in arrangement renders the manipulation of the machine 1 a matter which is ver): convenient in actual perfomance and eliminates all undue fatigue and exertion.

(,'ommunicalinv with the outlet end of the tone arm 22 is the reduci-d smaller end of a tubular :unplilier 25. This amplifier forms one of the 'salient elements of the present invention and as previously stated, its construction is such as to develop and 'amplify sound wares or vibrations imparted thereto and to clearly bring out all of the fi'ne tonal shades and over-tones of the composition being reproduced. To this end, the amplifier 25 consists of a tubular tapering body which is formed to include a horizontal portion- 26, a communicating and continuous vertical portion 27 and a widely flaring mouth portion 28, the portions 27 and 28 being connected by means of a sound dome 29. This amplifier is lpreferably forx'ed from a resonant 'materia for example, thi'n dry wood and to producethe eculiancdnst'rnction thereof 'shown in the rawings, the'amliler is composed of n 'plurality of-interttin pieces 30. These ieces aetrnsvolse y curved to -produce t -e'tubu'larformation of the amplifier and the longitudinal joints 31 are 'f orried after 'tBe'Ynaner-dsclosed in Figure 6. In other words, the joint 31 is 'produced by beveli'n the-'overlapping meeting ends 32 "f 'a'c piece 30 for a relatively extended di'stanc'e a'nd the joint is then cr'nplet'ed by'secu'lly cdinecting in any suitable manner these-'overlapping beveled endsT The end joints 330i th'efp'leces 30 are similar-1 frled, as shoivnn- Fig- -ure 5, or in ot er ids, 'the 'end 'vaflls-of each ece are beveled' is 't 34 'to edo" 'era'te with similarly beveled A'iiiralls provided upon the 'cm'plemental end o'f an adjoin inf; piece. This lresults nln ntettng te esoopic joint ivhi'ch -m'ay 4b'effnil co'n nected, if desired, b'y tie'e`fiict'iim ressnre and thefjoint's may belcinpl'eted by rigdly'onnecting'th'e wedge :tacs- 34 in "any 'suitable manner. It 'will be nted 'th'at the faces 34.-are so disposed that the joints defined 'threbetiven `will extend bckvidl from their iposition of 'i'municatin irait 1 the nteriiior of theaiplifer. This "ciistrction "is such that solnd Waves 'passing throngh the: amplifier l'will bepevtdlpm escaping unduly from 'the amplifier by Way of the joints 3 1 or 34, therby niinngthe sound vibrations `for proper expansion 'within the amplifier. I his'c6nstrubtioir reslts in enabling the 'peculiar curvature of"tlie amplifier to v"be readily 'eiected dndelibles the an'iplifier nto 'be formed from "the desired resonant material, namely tlin Wood. The

'outwardly AA'flaring `tubular construction of 'the amplifier: is artlier Eimportant featnreofthe lnventioii `in that the'bund' waves ar'e permitted 'to-g:i"rliilly and 'properly expand before being delivered from the amplifier and by being caused to travel through the somewhat extended length of the latter, said sound waves will have their intensity and magnitude accordingly enhanced in value. r`he presence of the dome construction 29 is also very important in the formation of the amplifier, in that it adapts the latter to the natural flow laws governing the passa e of sound, eliminates eddy conditions wif-.inn the amplifier and distinctlyl tends to clarify and increase the carrying properties of the sounds emanating from the am lifier. In acoustic value, the dome 29 may e likened to the overhead construction of a speakin stage or to the wall of a band stand. he mouth of the amplifier may be covered, if desired, by the usual foraminated screen 35.

In order to increase the resonanting area of the amplifier, the vertical portion 27 of the latter 1n this instance is provided with a plurality of hollow conical members 36 which are located in nested or telescopic order, the Walls of said members being spaced from each other and also from the walls of the amplifier. These conical members are held in place by means of bridge pieces 37, which rigidly unite said members with the adjacent Wall portions of the amplifier. Preferably, the members 36 are formed from a thin rosonantin material, and by the presence of the bridge pieces 37, the same will vibrate in harmony with the balls of the amplifier. It Will be observed that the members 36 are so positioned as not to impede the progress or iiow of sounds through the amplifier' but on the other hand are so arranged as merely to insure theengagement of the surfaces of said members with the sound vibrations. This results in increasing the resonance of the amplifier Without disturbing or obstructing the flow of the sound Waves.

Cooperative with the amplifier 25 is an improved sounding board structure 38. This structure consists of a suitable frame 39, which is built around the amplifier so that the amplifier and sounding board structure will constitute a unit in the construction of the talking machine. This frame is of such construction as to entirely surround all sides of the amplifier portions 27 and 28 with sounding boards. These sounding boards constitute s aced pairs of flat resonanting bodies or Wa ls 40, which are securely mounted for vibration within the frame 39. The inner of the walls 40 are connected for vibration with the adjacent walls of the amplifier 25 by means of bridge pieces 41, and similar pieces 42 are disposed between the Walls l() to insure their harmonious vibration.

From the foregoing it will be manifest that the present invention provides a structure possessing exceptional resonanting properties for the purpose of ampli ing and developing sound Waves produced rom a talking machine record. The am lifier 25 itself will practically develop the ndamental tones reproduced by the instrument, and through the provision of the sounding board structure, means have been provided for insuring the reproduction of delicate tone tints and expressions, such for example as the over-tones and accompanying partials. These over-tones find vent through a perforated Wall 43 located Within the cabinet l contiguous to the outlet end of the amplifier. Moreover by the construction of the amplifier, metallic and nasal notes usually to be found in talking machine renditions are avoided, and on the contrary, full, round and resonating notes are to be obtained. The frame 39 is preferably provided with rubber bottoms 0r the like 44, which retain the amplifier structure in place Within the cabinet and prevent the resonant walls of said structure from coming into direct engagement with the Walls of the cabinet.

In view of the foregoing description, taken in conjunction with the accompanying drawings, present invention provides a talking machine of considerable utility and one capable 0f carryin out the above recited aims and objects. hile the form of the invention here- 1n shown and described is what is belived to be the preferred embodiment thereof, it is neverthless to be understood that various forms, modifications and arrangement of the parts may be made Without departing from the spirit and scope of the invention as claimed.

With is claimed is:

In a talking machine, an amplifier, a housing extendin around the amplifier, and spaced there rom to provide a chamber, sound resonating boards disposed in spaced relation and located in the chamber and adjacent its inner Walls, bridge pieces connecting the innermost boards and amplifier, and bridge pieces arranged in the space between said boards and connecting the confronting faces thereof.

m si ature. SR BIC.

In testimony whereof I affix CARL it will be manifest that the 

